I was just reading this article on NYTimes.com and learned of a breed of goat called the Tennessee fainting goat. It doesn't actually faint, but when startled it freezes and may loose muscle control and collapse.
photo taken from NYTimes.com /Mike Mergen for The New York Times
Look at that beard! So cute. And it faints like a woman in a 1950's horror movie when surprised by a monster...or a swear word.